how about a sticky on this resurfacing issue

[benf2]

Seems that this issue keeps popping up. The issue of async.
Seems there are more than one method to resolve this and it is a big problem that needs to be addressed. Once i think i have it beat, i find a dvd ac3 stream that wont cooperate. So, Doom do you think we could dedicate some space to this problem? I and many others could use some more help on this issue. Both resolving video plays before audio and vice versa.

Thanks
Benf

:confused:

[SiC]

I've never had a problem with sync issues when using direct AC3 streams from a DVD with re-encoded MPEG2 streams with CCE. I once even had a DVD where the video was 28min 42sec long and the audio stream was 28min 28sec long with -66ms delay. I thought for sure that this would be out of sync since the audio was 14 seconds shorter with -66ms delay but I imported the two into Maestro and used the create sync audio track and guess what, it was all in sync.
Maybe I'm just lucky but I've re-encoded / re-authored 60+ DVDs now and never had an issue about async.

[benf2]

SiC,

Just want to be sure of what u are saying, you are saying you dont use any outside source to fix the delays, only Maestro sync?

Would you please tell me the steps u use in Maestro to sync them. Maybe that is where my problem is.

Thanks for your reply
Benf

[SiC]

Yeah, I don't use any sources other than Maestro to sync my audio. AC3 files, if directly stripped and untouched have timecodes in them which Maestro uses to align them in the timeline when you select the Create Sync Audio Track option. It is common that a video file and audio file has different lengths on a DVD and of course delay times. In my example that I refered to in my prior post, the audio was 14 seconds shorter than the video with -66ms delay. When I used the Create Sync Audio Track option in Maestro, it created a new audio that was longer than the original that I stripped out of the DVD, making it align with the video perfectly.
There really isn't much to explain about the steps in doing this. Just put your video & audio files on the time line, right click on the audio, select Create Sync Audio Track, and create a new audio track.
PS: For a test I re-stripped my new DVD that I created and guess what, the audio was back to 14 seconds shorter & -66ms delay. It's really weird how this AC3 time code stuff works......

[benf2]

just one last question...when u go to create the sync..are you cking the box that say sync to timecode?

[SiC]

Yes

[jaay]

this is not even necessary, if you ript the streams with smartripper maestro will automatically take the delay into account, no need to do anything. this has worked on 20+ NTSC discs which often have delays.

[SiC]

What about the time differences??? I'm sure you've noticed that some of the DVDs that you ripped had different lengths in video & audio. Did it align even with time differences without creating sync audio track???

[Doom9]

hmm.. anybody wants to wrap this up, write a post that has a descriptive title and contains all the relevant info and I'll make it a sticky.

[benf2]

Well, i reviewed the directions in the help file of Maestro and still have the same problem. The movie that is giving me all this trouble is Joyride. I used Smartripper to demux the ac3 stream and used CCE for the video. Author with Maestro.

Is there some type of new encryption causing this problem of audio laging behind the video. The video time line is 1:36:53:04 and the audio is 1:36:58:06 with a 12ms delay. As u can see these are fairly close yet the person clearly stops talking before u hear any thing.

Benf

[SiC]

benf2:
After you create the Sync Audio Track your new audio should be 1:36:53:04 or maybe off by 1 frame. Are you still having an async problem after creating the new audio file?
By the way you can manually sync the video/audio by moving the audio on the timeline. Zoom all the way down to frame level and slide the audio over to align the video/audio manually, but I never had to do this before. View the preview to make sure it is aligned then author.

[benf2]

SiC,
I tried again this morning before going to work and the result is the same. I took the video and audio imported into Maestro and created the sync which resulted in the same time, but when i play it back in the preview window the video is still faster...they finish moving their lips before the sound so now i am playing with moving the sound track down a little(of course this is trial and error).

I am ready to scrub this movie:devil:

Benf

[jaay]

it is soo simple. just demux into files in smartripper and import into dvd maestro and compile. it will auto sync and correct the time differences in the compiled project. it works perfectly every time, no need to do anything manually. the video and audio being different lengths is absolutely irrelevant.

[benf2]

That might be true for movies less than the 4.3g, but i am trying to put 2 movies on one disc. That is why i have to use CCE to reduce the video file size. The AC3 file is a smartripper demux, but the video is a product of cce.

[jaay]

re-encoding the video makes no difference. a 7gb video is the same length as a 3gb one. same number of frames etc. filesize makes no difference. i have re-encoded videos and sync is still perfect.

[benf2]

I have done several myself, but this one is beyond me. Something is going on, and that is why i was wondering if any new copyright scheme could cause this problem. Sure i have had a few that seem to start becoming async in the last parts of the movie, but none at the begining, and so noticeable.:confused:

[gvers]

What happens if you use the origanal video stream in meastro instead of the reencoded one do you still get sync problem? At least this will tell us if its the reencoded video stream or not.

[SiC]

gvers, he is using the original one, he's not re-encoding. He stripped it directly with Smart Ripper.

[benf2]

Just want to say Thank you to all of you trying to help me resolve this issue.

The ac3 stream is from smartripper...the video was done via cce in order to reduce the file size to 2gigs so i could put 2 movies on one disc. I even reencoded the movie, but same problem.
This problem is taking all the joy out of Joyride:)

Ben

[benf2]

Now i have a sync problem with Heist and Maestro is not taking care of it. It does create the ac3 file the same length as the video, but the async problem stays.

Has anyone done Joyride or Heist? still wonder if there is something in the encryption!

Just to mention this again....I use smartripper...this time i demux the ac3 file with sr and used flask with cce for the vob video files as well as direct stream copy of the ac3 file. I did this to compare the 2 ac3 files. And when i did the preview in Maestro they were both out of sync from the video....yes, i did try the create sync routine with no luck.

Anyone have another idea??????????

[benf2]

Well, its been awhile! But finally tried working on Heist again and even though the times import to Maestro within 1 second the delay of audio is very very noticeable...Turns out the only way for me to fix this was to slide the audio track down a full 7 seconds. I cant figure this out....has anyone else come across this much of a delay where other sync methods could not fix the delay. As stated before, i tried create a sync track and also tried various audio delay correctors.

Input appreciated!!